122738451 has 8 divisors (see below), whose sum is σ = 178528704. Its totient is φ = 74386920.

The previous prime is 122738443. The next prime is 122738459. The reversal of 122738451 is 154837221.

It is an interprime number because it is at equal distance from previous prime (122738443) and next prime (122738459).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122738451 - 2³ = 122738443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 3719347 = 122738451 / (1 + 2 + 2 + 7 + 3 + 8 + 4 + 5 + 1).

It is not an unprimeable number, because it can be changed into a prime (122738459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1859641 + ... + 1859706.

It is an arithmetic number, because the mean of its divisors is an integer number (22316088).

Almost surely, 2^122738451 is an apocalyptic number.

122738451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122738451 is a deficient number, since it is larger than the sum of its proper divisors (55790253).

122738451 is a wasteful number, since it uses less digits than its factorization.

122738451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719361.

The product of its digits is 13440, while the sum is 33.

The square root of 122738451 is about 11078.7386917465. The cubic root of 122738451 is about 496.9662310547.

The spelling of 122738451 in words is "one hundred twenty-two million, seven hundred thirty-eight thousand, four hundred fifty-one".